Frequencies for first 10,000 rows of wtreduc variable in namcs2009 dataset : weight | reduction | Freq. Percent Cum. ------------+----------------------------------- no | 9,557 95.57 95.57 yes | 443 4.43 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016